G-d is the Creator of heaven and earth and the “one” G-d of Abraham, Isaac and Jacob.  

Genesis 1:1 In the beginning G-d created the heavens and the earth.

Exodus 3:6 Then He said, "I am the G-d of your ancestors – the G-d of Abraham, the G-d of Isaac, and the G-d of Jacob."

Though G-d is one, we recognize Him as G-d the Father (Avinu), G-d the Son (Yeshua) and G-d the Holy Spirit (Ruach HaKodesh).  

2 Corinthians 13:14 May the grace of our Lord Yeshua (Jesus) the Messiah, the love of G-d, and the fellowship of the Ruach haKodesh (Holy Spirit) be with you all.

Now if you are having trouble understanding that we believe in one G-d with a triune nature (Father, Son, and Ruach haKodesh), you are either Jewish and had the Shema drilled into your head all your life, or you are just trying to reason how three can be one. Perhaps this will help.

Just as you have a spirit, soul, and body but are considered “one”, so G-d is “one”. Just as you can be a mother, sister, and a daughter but still be just you, so is G-d. More appropriately, since we are made in His image, we are “one”, as He is “one”.  Another example of this concept would be water is still one element whether it is in the form of liquid (water), steam (gas), or ice (solid).

Every Jew grows up learning the “Shema”. It is known as such because Shema is the first Hebrew word in the verse. It is like (but is not) the national anthem of Judaism. It comes from the Torah (first 5 books of the Bible).

Deuteronomy 6:4 "Hear 0 Israel the Lord our G-d the Lord is One". 

In Hebrew this reads: “Shema Yisrael Adonai Elohenu Adonai Echad”.

The last word “echad” means “united”, i.e. “one”. Let’s look elsewhere in our Torah in Genesis where the sentence structure is identical to Deuteronomy 6:4 and the word “echad” is used. When G-d is referring to two becoming “united” or “one” in marriage He uses the word “echad”.

Genesis 2:24 For this reason a man shall leave his father and his mother, and be joined to his wife; and they shall become one (echad) flesh. 

In Hebrew this would read “basar echad” or literally “flesh united as one”

There is another word for “one” in the Hebrew language, “yachid”.  It denotes a singular one or an absolute one.  If G-d had wanted to say that He was a singular one, He would have said “Shema Yisrael Adonai Elohenu Adonai Yachid”, but He didn’t.  Instead He told us that He is “echad”, a unity of one. 

Additionally in the Torah, G-d continues to show that He is echad, a unity of one.  

Genesis 1:26, G-d said, "Let us make man in our image, in our likeness".

Genesis 3:22 the Lord G-d said, "The man has now become like one of us, knowing good and evil.” 

Genesis 11:7, "Come, let us go down and confuse their language so that they will not understand each other."

So when we are talking about Yeshua (Jesus) and the Ruach haKodesh (Holy Spirit), we are speaking about G-d but naming His “parts”, (oy vay) similar to if I were talking about your soul or your spirit we would still be talking about you.

G-d tells us He AND His Ruach (Spirit) will direct us if we will just listen .

Isaiah 48:16 Come closer and listen. I have always told you plainly what would happen so you would have no trouble understanding. "And now the Sovereign LORD and his Ruach have sent me with this message: "The LORD, your Redeemer, the Holy One of Israel , says: I am the LORD your God, who teaches you what is good and leads you along the paths you should follow.

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